# Calculator Sci Unit Converter vs ChoicePop

The clearest difference is price: ChoicePop at Free against Calculator Sci Unit Converter's $1.99. ChoicePop also leads on update cadence (every 6 days vs monthly). Calculator Sci Unit Converter's advantage is iOS requirement (13.0 vs 16.0). On ads, in-app purchases and device support there is nothing between them.

ChoicePop is free to download; Calculator Sci Unit Converter costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Calculator Sci Unit Converter ships an update monthly, ChoicePop every 6 days. The most recent releases landed on October 11, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Calculator Sci Unit Converter | ChoicePop |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/calculator-sci-unit-converter/id6772422667/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 6 days** |
| Monetization | Paid | — |
| Size | 25 MB | 4 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Xiamen City Fanyou Network Technology Co., Ltd.](https://appshunter.io/developer/1842524161) | [Dieu Long](https://appshunter.io/developer/6790597844) |

## What reviewers say

### Calculator Sci Unit Converter

[App page](https://appshunter.io/ios/app/calculator-sci-unit-converter/id6772422667)

This app offers a robust calculator with both standard and scientific functions. It includes a unit converter for various measurements and currency, plus helpful shortcuts for percentages, taxes, and tips. All calculations are saved locally for easy access.

**Highlights:** Standard and scientific calculator modes, Unit conversion for length, weight, temperature, currency, Full calculation history log, Percentage, tax, and tip calculation shortcuts, Offline functionality, Optimized for phone and tablet

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### ChoicePop

[App page](https://appshunter.io/ios/app/choicepop-spin-and-pick/id6793348252)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calculator Sci Unit Converter free?

Calculator Sci Unit Converter costs $1.99, with no in-app purchases.

### Is ChoicePop free?

ChoicePop is free to download, with no in-app purchases.

### Do Calculator Sci Unit Converter or ChoicePop have ads?

Neither Calculator Sci Unit Converter nor ChoicePop shows ads.

### Which is updated more often, Calculator Sci Unit Converter or ChoicePop?

Calculator Sci Unit Converter ships an update monthly, and ChoicePop every 6 days. Most recently, Calculator Sci Unit Converter was updated on October 11, 2026 and ChoicePop on October 16, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*